harry houdini, evel knievel, david blaine, what separates daredevils from mere stunt men may be the backdrop. the tightrope walker perched over niagara falls is as compelling in 2012 as it was in 1876, where a man made wonder, a bridge, or a building. a pair of buildings. felipe petite, the man on the wire whose flight of fancy is all the more poignant because that wonder is gone. like petite, felix baumgartner spent years planning the jump. while others are planning the next great frontier. a journey to the center of the earth, jules verne for real. less than a century ago, pie lots were daredevils. charles lindbergh pushing boundaries that now we take for granted. without neil armstrong there would be no felix baumgartner. >> one small step for man -- >> reporter: baumgartner's giant leap didn't defy gravity he submitted to gravity all the way down. david wright, abc news, los angeles. >> it is nothing quite as death defying as working this show. when i think of brave, i think of you, rob. >> oh, look at me. >> don't make me go. >> deaw >> thank god my diaper was on tight. i needed it "the